Transparency / Color problems with GeClipMap

I have got some transparency problems with a GeClipMap. I am drawing some stuff into a
GeClipMap, generally it is just a rect layered with a text and icon decorator. The GeClipMap is
then drawn into the viewport by an ObjectData plugin. However if the underlying rect is not
fully desaturated, the icon bitmap is hue shifted by the bg hue. I have tried both relevant
GeClipMap drawing modes GE_CM_DRAWMODE_BLEND and the STATIC_SOMETHING one.